Plugins stuck in Generic view -- and no "Switch to Plugin Editor" menu item

Hi Johnny - yes Waves, various other 3rd party VST stuff was and is working fine! Only the Steinberg stuff seems affected (that still works, by the way - just difficult to use with reduced visibility).
Here’s a thought, though… I’m running this with a single screen, therefore it’s a constant competition between Start/Stop on the transport bar and run Word or Excel when you overshoot! I’ve frozen the task bar and reduced the screen size. Could this possibly have some relation to the reduced menu and fixed, low res VST display?? (I know it shouldn’t… but this IS Cubase and this IS WINDOWS!!)
Bazza